<template>
  <div class="login">
    <a-form ref="loginRef" class="login-form" :model="loginForm" autocomplete="off">
      <h3 class="title">若依后台管理系统</h3>
      <a-form-item name="username" :rules="[{ required: true, trigger: 'blur', message: '请输入您的账号' }]">
        <a-input class="login-form-input" v-model:value="loginForm.username">
          <template #prefix><UserOutlined style="color: rgba(0, 0, 0, 0.25)" /></template>
        </a-input>
      </a-form-item>
      <a-form-item name="password" :rules="[{ required: true, trigger: 'blur', message: '请输入您的密码' }]">
        <a-input class="login-form-input" type="password" v-model:value="loginForm.password">
          <template #prefix><LockOutlined style="color: rgba(0, 0, 0, 0.25)" /></template>
        </a-input>
      </a-form-item>
      <a-form-item name="code" :rules="[{ required: true, trigger: 'blur', message: '请输入验证码' }]" v-if="captchaEnabled">
        <a-input class="login-form-input" v-model:value="loginForm.code" placeholder="验证码" style="width: 63%">
          <template #prefix>
            <SafetyCertificateOutlined style="color: rgba(0, 0, 0, 0.25)" />
          </template>
        </a-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </a-form-item>
      <a-checkbox v-model:checked="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</a-checkbox>
      <a-form-item style="width: 100%">
        <a-button :loading="loading" size="large" type="primary" style="width: 100%" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </a-button>
        <div style="float: right" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </a-form-item>
    </a-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2023 ruoyi.vip All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup name="login">
import { getCodeImg } from '@/api/login'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'
import useUserStore from '@/store/modules/user'
import { UserOutlined, LockOutlined, SafetyCertificateOutlined } from '@ant-design/icons-vue'

const userStore = useUserStore()
const route = useRoute()
const router = useRouter()
const loginRef = ref(null)
const loginForm = ref({
  username: 'admin',
  password: 'admin123',
  rememberMe: false,
  code: '',
  uuid: ''
})

const codeUrl = ref('')
const loading = ref(false)
// 验证码开关
const captchaEnabled = ref(true)
// 注册开关
const register = ref(false)
const redirect = ref(undefined)
watch(
  route,
  (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect
  },
  { immediate: true }
)

function handleLogin() {
  loginRef.value.validate().then(() => {
    loading.value = true
    // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
    if (loginForm.value.rememberMe) {
      Cookies.set('username', loginForm.value.username, { expires: 30 })
      Cookies.set('password', encrypt(loginForm.value.password), { expires: 30 })
      Cookies.set('rememberMe', loginForm.value.rememberMe, { expires: 30 })
    } else {
      // 否则移除
      Cookies.remove('username')
      Cookies.remove('password')
      Cookies.remove('rememberMe')
    }
    // 调用action的登录方法
    userStore
      .Login(loginForm.value)
      .then(() => {
        const query = route.query
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== 'redirect') {
            acc[cur] = query[cur]
          }
          return acc
        }, {})
        router.push({ path: redirect.value || '/', query: otherQueryParams })
      })
      .catch(() => {
        loading.value = false
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode()
        }
      })
  })
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled
    if (captchaEnabled.value) {
      codeUrl.value = 'data:image/gif;base64,' + res.img
      loginForm.value.uuid = res.uuid
    }
  })
}

function getCookie() {
  const username = Cookies.get('username')
  const password = Cookies.get('password')
  const rememberMe = Cookies.get('rememberMe')
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  }
}

getCode()
getCookie()
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url('../assets/images/login-background.jpg');
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .login-form-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
